The oxidation kinetics of reactively sputtered amorphous Tas&Si;,NSe thin films are studied in dry and wet ambient in the temperature range of 650-850 “C by backscattering spectrometry, Dektak profilometer, and x-ray diffraction analyses. The dry oxidation is. well described by a parabolic time dependence which corresponds to a process controlled by the diffusion of the oxidant in the oxide. Th...

The suitability of hemp fibres as green support material for immobilization of Acidithiobacillus ferrooxidans cells in ferrous iron bio-oxidation process was investigated. A series of experiments were carried out in shake flasks and bioreactor for both cell immobilization and iron bio-oxidation. In flask experiments, five successive batch colonization cycles resulted in 6-fold increase...

Graphene oxide and carbon nanotubes supported Pt nanoparticles were successfully synthesized by wet chemical reduction method. The structures methanol oxidation performance of the two catalysts characterized scanning electron microscope (SEM), transmission (TEM), X-ray diffraction (XRD), Raman spectroscopy (Raman) electrochemical workstation. results show that graphene exhibits higher active su...

We present a new global three-dimensional chemical model for the troposphere, named CHASER (CHemical AGCM for Study of atmospheric Environment and Radiative forcing). This model, developed in the framework of Center for Climate System Research/National Institute for Environment Studies (CCSR/NIES) atmospheric general circulation model (AGCM), is aimed to study tropospheric photochemistry and it...